diff options
Diffstat (limited to 'gdb/gdbserver/linux-mips-low.c')
| -rw-r--r-- | gdb/gdbserver/linux-mips-low.c | 119 |
1 files changed, 94 insertions, 25 deletions
diff --git a/gdb/gdbserver/linux-mips-low.c b/gdb/gdbserver/linux-mips-low.c index 1fb6237..1f58442 100644 --- a/gdb/gdbserver/linux-mips-low.c +++ b/gdb/gdbserver/linux-mips-low.c @@ -27,8 +27,17 @@ /* Defined in auto-generated file mips-linux.c. */ void init_registers_mips_linux (void); +/* Defined in auto-generated file mips-dsp-linux.c. */ +void init_registers_mips_dsp_linux (void); /* Defined in auto-generated file mips64-linux.c. */ void init_registers_mips64_linux (void); +/* Defined in auto-generated file mips64-dsp-linux.c. */ +void init_registers_mips64_dsp_linux (void); + +#ifdef __mips64 +#define init_registers_mips_linux init_registers_mips64_linux +#define init_registers_mips_dsp_linux init_registers_mips64_dsp_linux +#endif #ifndef PTRACE_GET_THREAD_AREA #define PTRACE_GET_THREAD_AREA 25 @@ -39,9 +48,15 @@ void init_registers_mips64_linux (void); #endif #define mips_num_regs 73 +#define mips_dsp_num_regs 80 #include <asm/ptrace.h> +#ifndef DSP_BASE +#define DSP_BASE 71 +#define DSP_CONTROL 77 +#endif + union mips_register { unsigned char buf[8]; @@ -53,27 +68,84 @@ union mips_register /* Return the ptrace ``address'' of register REGNO. */ -static int mips_regmap[] = { - -1, 1, 2, 3, 4, 5, 6, 7, - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31, +#define mips_base_regs \ + -1, 1, 2, 3, 4, 5, 6, 7, \ + 8, 9, 10, 11, 12, 13, 14, 15, \ + 16, 17, 18, 19, 20, 21, 22, 23, \ + 24, 25, 26, 27, 28, 29, 30, 31, \ + \ + -1, MMLO, MMHI, BADVADDR, CAUSE, PC, \ + \ + FPR_BASE, FPR_BASE + 1, FPR_BASE + 2, FPR_BASE + 3, \ + FPR_BASE + 4, FPR_BASE + 5, FPR_BASE + 6, FPR_BASE + 7, \ + FPR_BASE + 8, FPR_BASE + 9, FPR_BASE + 10, FPR_BASE + 11, \ + FPR_BASE + 12, FPR_BASE + 13, FPR_BASE + 14, FPR_BASE + 15, \ + FPR_BASE + 16, FPR_BASE + 17, FPR_BASE + 18, FPR_BASE + 19, \ + FPR_BASE + 20, FPR_BASE + 21, FPR_BASE + 22, FPR_BASE + 23, \ + FPR_BASE + 24, FPR_BASE + 25, FPR_BASE + 26, FPR_BASE + 27, \ + FPR_BASE + 28, FPR_BASE + 29, FPR_BASE + 30, FPR_BASE + 31, \ + FPC_CSR, FPC_EIR + +#define mips_dsp_regs \ + DSP_BASE, DSP_BASE + 1, DSP_BASE + 2, DSP_BASE + 3, \ + DSP_BASE + 4, DSP_BASE + 5, \ + DSP_CONTROL + +static int mips_regmap[mips_num_regs] = { + mips_base_regs, + 0 +}; - -1, MMLO, MMHI, BADVADDR, CAUSE, PC, +static int mips_dsp_regmap[mips_dsp_num_regs] = { + mips_base_regs, + mips_dsp_regs, + 0 +}; - FPR_BASE, FPR_BASE + 1, FPR_BASE + 2, FPR_BASE + 3, - FPR_BASE + 4, FPR_BASE + 5, FPR_BASE + 6, FPR_BASE + 7, - FPR_BASE + 8, FPR_BASE + 9, FPR_BASE + 10, FPR_BASE + 11, - FPR_BASE + 12, FPR_BASE + 13, FPR_BASE + 14, FPR_BASE + 15, - FPR_BASE + 16, FPR_BASE + 17, FPR_BASE + 18, FPR_BASE + 19, - FPR_BASE + 20, FPR_BASE + 21, FPR_BASE + 22, FPR_BASE + 23, - FPR_BASE + 24, FPR_BASE + 25, FPR_BASE + 26, FPR_BASE + 27, - FPR_BASE + 28, FPR_BASE + 29, FPR_BASE + 30, FPR_BASE + 31, - FPC_CSR, FPC_EIR, +/* DSP registers are not in any regset and can only be accessed + individually. */ - 0 +static unsigned char mips_dsp_regset_bitmap[(mips_dsp_num_regs + 7) / 8] = { + 0xfe, 0xff, 0xff, 0xff, 0xfe, 0xff, 0xff, 0xff, 0xff, 0x80 }; +/* Try peeking at an arbitrarily chosen DSP register and pick the available + user register set accordingly. */ + +static void +mips_arch_setup (void) +{ + static void (*init_registers) (void); + + gdb_assert (current_inferior); + + if (init_registers == NULL) + { + int pid = lwpid_of (get_thread_lwp (current_inferior)); + + ptrace (PTRACE_PEEKUSER, pid, DSP_CONTROL, 0); + switch (errno) + { + case 0: + the_low_target.num_regs = mips_dsp_num_regs; + the_low_target.regmap = mips_dsp_regmap; + the_low_target.regset_bitmap = mips_dsp_regset_bitmap; + init_registers = init_registers_mips_dsp_linux; + break; + case EIO: + the_low_target.num_regs = mips_num_regs; + the_low_target.regmap = mips_regmap; + the_low_target.regset_bitmap = NULL; + init_registers = init_registers_mips_linux; + break; + default: + perror_with_name ("ptrace"); + break; + } + } + init_registers (); +} + /* From mips-linux-nat.c. */ /* Pseudo registers can not be read. ptrace does not provide a way to @@ -84,7 +156,7 @@ static int mips_regmap[] = { static int mips_cannot_fetch_register (int regno) { - if (mips_regmap[regno] == -1) + if (the_low_target.regmap[regno] == -1) return 1; if (find_regno ("r0") == regno) @@ -96,7 +168,7 @@ mips_cannot_fetch_register (int regno) static int mips_cannot_store_register (int regno) { - if (mips_regmap[regno] == -1) + if (the_low_target.regmap[regno] == -1) return 1; if (find_regno ("r0") == regno) @@ -352,13 +424,10 @@ struct regset_info target_regsets[] = { }; struct linux_target_ops the_low_target = { -#ifdef __mips64 - init_registers_mips64_linux, -#else - init_registers_mips_linux, -#endif - mips_num_regs, - mips_regmap, + mips_arch_setup, + -1, + NULL, + NULL, mips_cannot_fetch_register, mips_cannot_store_register, mips_get_pc, |